检索结果-南通市图书馆

Polynomial Approach to Optimal One-wafer Cyclic Scheduling of Treelike Hybrid Multi-Cluster Tools via Petri Nets

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2018年第1期5卷 270-280页

作者： Fajun Yang Naiqi Wu Yan Qiao rong su Department of Industrial Engineering School of Electro-Mechanical Engineering Guangdong University of Technology Guangzhou 510006 China School of Electrical and Electronic Engineering at Nanyang Technological University 639798 Singapore Institute of Systems Engineering Macao University of Science and Technology Taipa Macao 999078 China school of Electro-Mechanical Engineering Guangdong University of Technology Guangzhou 510006 China IEEE

A treelike hybrid multi-cluster tool is composed of both single-arm and dual-arm cluster tools with a treelike topology. Scheduling such a tool is challenging. For a hybrid treelike multi-cluster tool whose bottleneck individual tool is process-bound, this work aims at finding its optimal one-wafer cyclic schedule. It is modeled with Petri nets such that a onewafer cyclic schedule is parameterized as its robots' waiting *** on the model, this work proves the existence of its onewafer cyclic schedule that features with the ease of industrial implementation. Then, computationally efficient algorithms are proposed to find the minimal cycle time and optimal onewafer cyclic schedule. Multi-cluster tool examples are given to illustrate the proposed approach. The use of the found schedules enables industrial multi-cluster tools to operate with their highest productivity.

关键词： Multi-cluster tool Petri nets scheduling semiconductor manufacturing

Cooperative transmission in delay tolerant network

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2019年第1期30卷 30-36页

作者： WANG rong WU Yahui HUANG Hongbin DENG su Science and Technology on Information Systems Engineering Laboratory National University of Defense Technology

The delay tolerant network(DTN) is an emerging concept, which is used to describe the network, where the communication link may disrupt frequently. To cope with this problem, the DTN uses the store-carry-forward(SCF) transmission mode. With this policy, the messages in the DTN are transmitted based on the nodes' cooperation. However, the nodes may be selfish, so the source has to pay certain rewards for others to get their help. This paper studies the optimal incentive policy to maximize the source's final utility. First, it models the message spreading process as several ordinary differential equations(ODEs) based on the meanfield approximation. Then, it mathematically gets the optimal policy and explores the structure of the policy. Finally, it checks the accuracy of the ODEs model and shows the advantages of the optimal policy through simulation and theoretical results respectively.

关键词： delay tolerant network (DTN) optimal control message transmission.

A case report of abdominal distention caused by herpes zoster

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第33期18卷 4627-4628页

作者： su-rong Zhou Chuan-Yu Liu Department of Dermatology The Affiliated Yantai Yuhuangding Hospital of Qingdao University Medical College Yantai 264000 Shandong Province China

Gastrointestinal complications caused by herpes zoster are extremely rare. Here, we described a case of abdominal distention caused by herpes zoster. The patient was a 59-year-old female who suffered from unexplained paroxysmal and a burning pain on the right part of her waist and abdomen, accompanied by abdominal distention. Intestinal pseudo-obstruction was diagnosed by abdominal radiography. Distention of the right abdominal wall was still apparent after one month. In this report, we found that recovery from abdominal distention caused by herpes zoster is difficult and may require surgical intervention.

关键词： Abdominal distention Herpes zoster Intestinal pseudo-obstruction Ogilvie's syndrome

Generating Even-Photon State via Resonant Interaction Between Ladder-Type Three-Level Atoms with a Single-Mode Field

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2008年第1期49卷 221-224页

作者： ZHONG Zhi-rong su Wan-Jun Department of Electronic Science and Applied Physics Puzhou University Puzhou 350002 China

A scheme is presented to generate even-photon state based on resonant interaction between ladder-type three-level atoms with a single-mode field. In the scheme, a sequence of suitably prepared ladder-type three-level atoms are orderly sent through a single-mode cavity initiaJly in vacuum state. The detection of a J1 the atoms in the ground states collapses the cavity to the desired state. The scheme is based on the resonant interaction of atoms with the cavity, and thus the required interaction time can be greatly shortened. This is important in view of decoherence.

关键词： even photon state resonant interaction ladder-type atom

Influence of matrix physical properties on flow characteristics in dual network model

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2023年第4期20卷 2244-2252页

作者： Chen-Chen Wang Yong-Fei Yang Deng-Lin Han Miao-Miao su rong-rong Hu Cooperative Innovation Center of Unconventional Oil and Gas Yangtze UniversityWuhan430100HubeiChina Laboratory of Reservoir Microstructure Evolution and Digital Characterization Yangtze UniversityWuhan430100HubeiChina School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina School of Geosciences Yangtze UniversityWuhan430100HubeiChina College of Resources and Environment Yangtze UniversityWuhan430100HubeiChina School of Petroleum Engineering Yangtze UniversityWuhan430100HubeiChina

The tight oil formation develops with microfractures and matrix pores,it is important to study the influence of matrix physical properties on flow *** first,the representative fracture and matrix samples are selected respectively in the dual media,the fracture and matrix digital rocks are constructed with micro-CT scanning at different resolutions,and the corresponding fracture and matrix pore networks are extracted,***,the modified integration method is proposed to build the dual network model containing both fracture and matrix pore-throat elements,while the geometric-topological structure equivalent matrix pores are generated to fill in the skeleton domain of fracture network,the constructed dual network could describe the geometric-topological structure characteristics of fracture and matrix pore-throat *** last,by adjusting the matrix pore density and the matrix filling domain factor,a series of dual network models are obtained to analyze the influence of matrix physical properties on flow characteristics in *** can be seen that the matrix system contributes more to the porosity of the dual media and less to the *** the decrease in matrix pore density,the porosity/permeability contributions of matrix system to dual media keep decreasing,but the decrease is not significant,the oil-water co-flow zone decreases and the irreducible water saturation increases,and the saturation interval dominated by the fluid flow in the fracture keeps *** the decrease in matrix filling domain factor,the porosity/permeability contributions of matrix system to dual media decreases,the oil-water co-flow zone increases and the irreducible water saturation decreases,and the saturation interval dominated by the fluid flow in the fracture keeps *** results can be used to explain the dual-media flow pattern under different matrix types and different fracture control volumes during tight oil production

关键词： Network integration Dual media Flow characteristics Matrix pore density Matrix filling domain

An Extended Chiral su（3） Quark Model

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2003年第5期39卷 569-572页

作者： ZHANGZong-Te YUYou-Wen WANGPing DAILiao-rong InstituteofHighEnergyPhysics ThechineseAcademyofSciencesBeijing100039China DepartmentofPhysics LiaoningNormaluniversityDalian116029China

The chiral su(3) quark model is extended by including the vector meson exchanges to describe the short range interactions. The phase shifts of NN scattering are studied in this model. Compared with the results of the chiral su(3) quark model in which only the pseudo-scalar and scalar chiralfields are considered, the phase shifts of 1 So wave are obviously improved.

关键词：夸克模型手性对称性 QCD 粒子物理学强相互作用

FAIRING TECHNIQUE OF THE CURVES AND suRFACES IN INDUSTRIAL STYLING DESIGN

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2008年第1期21卷 106-110页

作者： HE Yaohua rong Hui su Chuqi LI Yujie College of Automotive Engineering Wuhan University of Technology Wuhan 430070China Hubei Technical College of Communication Wuhan 430071 China

To many industrial products such as cell phone, family appliance, vehicle, a pretty shape of nice visual effect is indispensable. To fulfill this target, designers are endeavoring to make the curve and surface of the products smooth and continuous during the shape design. Through the analysis and generalization of the present smoothing methods, the energy optimization method which combines the merits of energy method and least squares method together is studied, the target function of energy optimization method is derived, the solution to the target function and steps of curve fairing is introduced, the skills and methods building A-class surface which are based on cloud data measured from 3D scanning are studied, the validity of energy optimization method is verified with the example of the shape design ofa mini-EV as well.

关键词： Shape design Energy optimization Curve fairing

Investigation of Ag(Ga,In)Se_(2)as thin-film solar cell absorbers:A first-principles study

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 101-108页

作者： rong Wang Baoying Dou Yifeng Zheng su-Huai Wei Institute of Advanced Semiconductors&Zhejiang Provincial Key Laboratory of Power Semiconductor Materials and Devices ZJU-Hangzhou Global Scientific and Technological Innovation CenterHangzhou 311200China Beijing Computational Science Research Center Beijing 100193China

Using first-principles calculations,the structural,electronic,and defect properties of AgInSe_(2)(AIS),AgGaSe_(2)(AGS),and their alloys(AIGS)are systematically studied and compared with their Cu counterparts as potential candidates for thin-film solar cell *** bandgap energies of AIS(1.24 eV)and AGS(1.84 eV)are larger than their Cu counterparts,despite their larger lattice *** to the Shockley-Queisser theory,AIS or AIGS could be more suitable for solar-cell-absorber materials than their Cu ***,after investigating the band structures and intrinsic defect properties of AIS and AGS,we find that,(i)AIS and AGS have large negative crystal field splitting,thus low density of states near the valence band maximum(VBM);(ii)similar to the Cu counterparts,Ag vacancy(V_(Ag))is the main hole-carrier provider,while In_(Ag)(or Ga_(Ag))serves as the hole-carrier killer in p-type AIS(or AGS).However,because the positions of theVBM and conduction band minimum of AIS(or AGS)are lower than those of Cu In Se_(2)(CIS)[or Cu Ga Se_(2)(CGS)],the compensation of the p-type doping in AIS(or AGS)is more ***,the p-type doping of AIS(or AIGS)is more difficult than that of CIS(or CIGS),which is consistent with the doping limit *** improve the p-type doping of the AIS(or AIGS)as the solar-cell absorber,thus,improve the power conversion efficiency(PCE),the Ag-rich/(In,Ga)-poor/Se-rich growth condition is *** engineering of AIS with AGS can enhance the PCE because it can tune the bandgap energy of the absorber and band alignment at the absorber/buffer *** importantly,we suggest that for AIS(or AIGS)solar cell,the traditional buffer material of Cd S is not suitable anymore due to the large conduction band offset between AIS and Cd S.A new buffer layer material with a lower conduction band edge is necessary for better electron transport in AIS(or AIGS)solar cell.

关键词： thin-film solar cells chalcopyrites point defects alloys first-principles calculations

Glucocorticoid receptor signaling in the brain and its involvement in cognitive function

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第9期20卷 2520-2537页

作者： Chonglin su Taiqi Huang Meiyu Zhang Yanyu Zhang Yan Zeng Xingxing Chen Brain Science and Advanced Technology Institute Hubei Province Key Laboratory of Occupational Hazard Identification and ControlSchool of MedicineWuhan University of Science and TechnologyWuhanHubei ProvinceChina

The hypothalamic-pituitary-adrenal axis regulates the secretion of glucoco rticoids in response to environmental *** the brain,a nuclear receptor transcription fa ctor,the glucocorticoid recepto r,is an important component of the hypothalamicpituitary-a d renal axis's negative feedback loop and plays a key role in regulating cognitive equilibrium and *** glucoco rticoid receptor influences cognitive processes,including glutamate neurotransmission,calcium signaling,and the activation of brain-derived neurotrophic factor-mediated pathways,through a combination of genomic and non-genomic *** interactions within the central nervous system can alter the expression and activity of the glucocorticoid receptor,there by affecting the hypothalamic-pituitary-a d renal axis and stress-related cognitive *** appropriate level of glucocorticoid receptor expression can improve cognitive function,while excessive glucocorticoid receptors or long-term exposure to glucoco rticoids may lead to cognitive *** with cognitive impairment-associated diseases,such as Alzheimer's disease,aging,depression,Parkinson's disease,Huntington's disease,stroke,and addiction,often present with dysregulation of the hypothalamic-pituitary-adrenal axis and glucocorticoid receptor *** review provides a comprehensive overview of the functions of the glucoco rticoid receptor in the hypothalamic-pituitary-a d renal axis and cognitive *** emphasizes that appropriate glucocorticoid receptor signaling fa cilitates learning and memory,while its dysregulation can lead to cognitive *** provides clues about how glucocorticoid receptor signaling can be targeted to ove rcome cognitive disability-related disorders.

关键词： brain-derived neurotrophic factor calcium signaling glucocorticoid receptor glucocorticoid glutamate transmission hypothalamic-pituitary-adrenal axis long-term potentiation neurocognitive disorders neuroplasticity stress